DEVELOPMENT METHOD OF TUBE-LIKE AND THICK ORE BODIES Russian patent published in 2012 - IPC E21C41/22 

FIELD: mining.

SUBSTANCE: development method of tube-like thick steep and flat dipping ore bodies involves preparatory and first works, second mining with vertical cuttings along the spread or across the spread by means of drilling method for resources with large-diameter wells, ore output and goaf stowing. At that, width of cuttings is accepted equal to diameter of production well and second working is performed in cuttings in three stages. At the first stage the removed cutting is drilled along its length with transverse rows of vertical blasting wells throughout the height of the mining level. In the middle between the drilled transverse rows of blasting wells there drilled by means of known methods are scavenger wells and ore mass broken during drilling is shrunken owing to its partial drawing. At the second stage of the second mining of the cutting there drawn is ore mass shrunken in scavenger wells with further blasting of transverse rows of vertical wells throughout the height of the mining level and output of ore mass broken by blasting operations. At the third stage there filled is the worked-out area of the cutting with hardening stowing mixture.

EFFECT: higher efficiency of the development, crushing quality of the produced ore and creation of safe conditions for mining activities at high level of their mechanisation.

5 dwg